Crane Use Application

Portal type selection 

(1) Single and double beams In general, the lifting capacity is less than 50t and the span is less than 35m, and there is no special requirement for use. If the width of the gantry leg is required to be large, the working speed is high, or the heavy and long pieces are often lifted, the double-girder gantry crane should be selected.

(2) Span The span of the gantry crane is an important factor affecting the quality of the crane itself. In the selection, the span should be minimized under the premise of meeting the equipment use conditions and meeting the span series standards. (3) Determination of wheel base (a) It can meet the stability requirements of the gantry along the direction of the crane track.

(b) The overall dimensions of the goods should be able to pass through the outrigger plane steel frame smoothly (c) Pay attention to make the wheel base B and the span S in a certain proportion, generally take the wheel base B=(1/4-1/6)S. (4) Spacing dimensions During work, there should be a certain space dimension between the external dimensions of the gantry crane and the passage of goods and transport vehicles in the yard to facilitate loading and unloading operations.

When loading and unloading within the span, the general transport vehicle should keep a distance of more than 0.7m from the door leg. When the spreader is not working, there should be a distance of more than 0.5m from the transport vehicle, and when the goods pass through the door legs, there should be a distance of more than 0.5m.